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Finding the Fourth Proportional to 358,023.63, 536,995.34 and 91,790.40

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Solution

The fourth proportional to 358,023.63, 536,995.34 and 91,790.40 is: 137,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,023.63 : 536,995.34 = 91,790.40 : x
  2. Step 2: Convert to fraction form
    358,023.63/536,995.34 = 91,790.40/x
  3. Step 3: Cross multiply
    358,023.63x = 536,995.34 × 91,790.40
  4. Step 4: Simplify right side
    358,023.63x = 49,291,017,056.74
  5. Step 5: Solve for x
    x = 49,291,017,056.74/358,023.63
  6. Step 6: Final answer
    x = 137,675.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.